aadmincategorylist.java

在线模拟选课系统

/*
 * This product includes software developed by the
 * Apache Software Foundation (http://www.apache.org/).
 */
package ch07.action;

import java.io.*;
import java.util.*;

import javax.servlet.*;
import javax.servlet.http.*;

import ch07.*;
import ch07.object.unit.*;
import ch07.logic.*;
import ch07.global.*;
import ch07.database.*;

/**
 * 针对管理系统分类一览的Servlet
 * @author ShenYK
 * @version 1.0
 */
public class AAdminCategoryList
{
    //删除某个分类
    public void doDelete( Hashtable inputData, 
                           Hashtable outputData,
                           HttpSession mySession )
        throws Exception
    {
        //首先获得要删除的分类ID
        String sCategoryId = (String)inputData.get("categoryId");
        
        //调用对应的logic类
        LCategory lCategory = (LCategory)GlobalObjectProvider.getLogicService(CommonConst.LOGIC_KEY_CATEGORY);
        //删除对应的分类
        lCategory.deleteCategoryById( sCategoryId );
        
        //然后重新检索
        Vector vCategorys = lCategory.getAllCategory();
        
        //确定要去的页面=分类选择页面
        outputData.put( "pageId", CommonConst.VIEWID_ADMIN_CATEGORY_LIST);
        //往值域中设置分类信息
        outputData.put( "categorys", vCategorys );
        return;
    }
    
    //修改某条试题
    public void doModify( Hashtable inputData, 
                           Hashtable outputData,
                           HttpSession mySession )
        throws Exception
    {
        //首先获得要修改的分类ID
        String sCategoryId = (String)inputData.get("categoryId");
        
        //获得对应的问题的详细信息，然后迁移到详细信息修改页面
        //调用对应的logic类
        LCategory lCategory = (LCategory)GlobalObjectProvider.getLogicService(CommonConst.LOGIC_KEY_CATEGORY);
        //获取对应的记录
        Category categoryObj = lCategory.getCategoryById( sCategoryId );
        
        //然后迁移到指定页面
        outputData.put( "pageId", CommonConst.VIEWID_ADMIN_CATEGORY_MODIFY);
        //往值域中设置当前题目及位置信息
        outputData.put( "category", categoryObj );
        return;
    }
    
    //添加一条新试题
    public void doAdd( Hashtable inputData, 
                        Hashtable outputData,
                        HttpSession mySession )
        throws Exception
    {
        //不用设置任何值域，直接迁移过去即可
        outputData.put( "pageId", CommonConst.VIEWID_ADMIN_CATEGORY_ADD);
        return;
    }
    
}